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1, 11, 21, 1211
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jt
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jt
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Sat Nov 13 1999 at 9:50:00
One of the trickier "what is the next number?"
puzzles
. The first few terms are
1
, 11, 21, 1211, 111221.... your
task
is to find the rule and say what follows.
(
thing
) by
pi
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print
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I like it!
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1
C!
Sat Nov 13 1999 at 9:50:00
It's the
Audioactive Sequence
. Also known as
Look and Say sequence
.
You make the next number by describing the previous;
So the next would be 111221,
and then would be "three ones, two twos, one one", which is 312211.
Studied extensively by
J. H. Conway
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